def iterparse(self, lines: Union[Iterable[str], str]) -> Iterator[Tree]:
"""
Yield trees parsed from *lines*.
Args:
lines: a string or open file with PENMAN-serialized graphs
Returns:
The :class:`Tree` object described in *lines*.
"""
tokens = lex(lines, pattern=PENMAN_RE)
while tokens and tokens.peek().type in ('COMMENT', 'LPAREN'):
yield self._parse(tokens)
def parse(self, s: str) -> Tree:
"""
Parse PENMAN-notation string *s* into its tree structure.
Args:
s: a string containing a single PENMAN-serialized graph
Returns:
The tree structure described by *s*.
Example:
>>> codec = PENMANCodec()
>>> codec.parse('(b / bark-01 :ARG0 (d / dog))') # noqa
Tree(('b', [('/', 'bark-01'), ('ARG0', ('d', [('/', 'dog')]))]))
"""
tokens = lex(s, pattern=PENMAN_RE)
return self._parse(tokens)
def _lex(s):
return [tok.type for tok in lexer.lex(s)]
def parse_triples(self, s: str) -> List[BasicTriple]:
""" Parse a triple conjunction from *s*."""
tokens = lex(s, pattern=TRIPLE_RE)
return self._parse_triples(tokens)
def _lex(s):
return [tok.type for tok in lexer.lex(s, pattern=lexer.TRIPLE_RE)]